Display apparatus

Patent metadata

Field	Value
Publication number	US-11513621-B2
Application number	US-201815734137-A
Country	US
Kind code	B2
Filing date	Jun 1, 2018
Priority date	Jun 1, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A display apparatus includes: a display panel, a guide panel coupled to a rear surface of the display panel, a main frame coupled to the guide panel, and a force sensor module disposed between the guide panel and the main frame. The force sensor module includes: a sensor bar including one or more sensor rods, the one or more sensor rods extending from a central portion of the main frame toward a peripheral portion of the main frame, and a strain gauge provided at each of the one or more sensor rods.

First claim

The invention claimed is:

1. A display apparatus, comprising:
a display panel;
a guide panel coupled to a rear surface of the display panel;
a main frame coupled to the guide panel; and
a force sensor module disposed between the guide panel and the main frame,
wherein the force sensor module includes:
a sensor bar including one or more sensor rods, the one or more sensor rods extending from a central portion of the main frame toward a peripheral portion of the main frame, and
a strain gauge provided at each of the one or more sensor rods,
wherein an inner end of each of the one or more sensor rods is fixed to the main frame,
wherein an outer end of each of the one or more sensor rods is fixed to the guide panel, and
wherein the main frame defines an opening at a position corresponding to the outer end of each of the one or more sensor rods, a fastening member passing through the opening to fasten each of the one or more sensor rods to the guide panel.

2. The display apparatus of claim 1 ,
wherein an upper portion of the sensor bar and a lower portion of the sensor bar are horizontally symmetrical with each other.

3. The display apparatus of claim 2 ,
wherein each of the upper portion of the sensor bar and the lower portion of the sensor bar extends in a diagonal direction.

4. The display apparatus of claim 1 ,
wherein the sensor bar includes a stem rod, and
wherein the one or more sensor rods extend outwardly from both ends of the stem rod.

5. The display apparatus of claim 4 ,
wherein the stem rod extends in a vertical or horizontal direction.

6. The display apparatus of claim 5 ,
wherein the sensor bar is a pair of sensor bars disposed to be vertically or horizontally symmetric to each other.

7. The display apparatus of claim 4 ,
wherein the main frame defines a stem recession into which the stem rod is inserted.

8. The display apparatus of claim 7 ,
wherein a guide hole is provided in one of the stem rod or the main frame, and
wherein a protrusion to be inserted into the guide hole is provided in the other one of the stem rod or the main frame.

9. The display apparatus according to claim 8 ,
wherein the outer end of each of the one or more sensor rods is spaced apart from a bottom surface of the main frame so as to be movable toward the main frame.

10. The display apparatus of claim 9 ,
wherein the guide panel provides a boss protruding in a rearward direction, and
wherein the outer end of each of the one or more sensor rods is fixed to the boss.

11. The display apparatus of claim 10 ,
wherein the fastening member passes through the opening to fasten each of the one or more sensor rods to the boss.

12. The display apparatus of claim 4 ,
wherein an angle formed between each of the one or more sensor rods and the stem rod is 100° to 150°.

13. The display apparatus of claim 1 ,
wherein the strain gauge is disposed at a point where deformation of each of the one or more sensor rods according to a pressure applied to the display panel is greatest.

14. The display apparatus of claim 1 , further comprising:
at least one haptic module disposed at a rear surface of the guide panel and configured to provide haptic effects to the display panel,
wherein the sensor bar overlaps with a portion of the at least one haptic module.

15. The display apparatus of claim 14 , further comprising:
a processor electrically connected to the display panel,
wherein the display panel is configured to convert a pressure applied to the display panel into an electrical signal and provide, to the processor, the electrical signal.

16. The display apparatus of claim 15 , wherein the haptic module includes a haptic actuator, and
wherein the haptic actuator is configured to provide, based on the electrical signal, the haptic effects to the display panel.

17. The display apparatus of claim 16 , further comprising:
a printed circuit board (PCB) panel disposed at the main frame, and
wherein the strain gauge includes a signal transmitter configured to transmit, to the PCB panel, an input sensed by the strain gauge.

18. The display apparatus of claim 17 , wherein the signal transmitter includes at least one bent portion that varies based on a position of the strain gauge on each of the one or more sensor rods.

19. The display apparatus of claim 1 ,
wherein the strain gauge is disposed between the inner end and the outer end of each of the one or more sensor rods, and
wherein the strain gauge is positioned closer to the inner end of each of the one or more sensor rods than to the outer end of each of the one or more sensor rods.

Assignees

• Lg Electronics Inc

Inventors

• Sa Jaecheon
• Yu Dongkill
• Park Yongseop

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/133314

  Back frames · CPC title

• G06F2203/04105

  Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position · CPC title

• G06F3/04142

  the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title